The work involves some mild exercise — walking around the equipment etc. so you can take it that the breathing rate of the typical employee (in any of the 3 areas) is 25 liters of air per minute. You have decided to assess the situation and to prepare a presentation/write a report for management which details your concerns and any recommendations you might make:

1. Comment on each of the three dose-response curves. Are the differences between them significant? Are any of the three curves of particular concern? Detail your reasoning.
2. Calculate the three air sampling results.
3. Given that the dose in the dose-response curves is measured in mg and your figures are in mg/m? calculate the mg of each material being inhaled by each employee over the course of an exactly 8-hour working day.
4. Evaluate the results. Are any of them of particular concern?
5. What are the likely effects from the above results — how might employees be impacted and in what manner?
6. Are exposure reduction controls necessary and why?